Featuring a crystal-clear transducer with CHIRP ClearVü sonar capabilities, Garmin's Striker Plus 5cv Sonar/GPS Combo delivers an incredible view of the terrain, structure and activity below your boat so you can optimize your presentation. Bright 5" display is easy to read, even in sunlight, and includes simple-to-use controls. Quickdraw Contours mapping software allows you to create up to 2 million acres of contoured maps so you can return to hidden structure and terrain that's likely to hold fish, while integrated GPS lets you easily mark hotspots or check your boat's speed. Comes with both a transom and trolling-motor mount.